JPH018588Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a soil improvement material supplying device for a ground treatment machine that improves soft ground by stirring and mixing a granular ground improvement material.

In order to improve the stirring and mixing properties of the soil and the improvement material in the soil treatment machine, it is necessary to discharge the improvement material multiple times, that is, to simultaneously discharge the improvement material from multiple discharge blades. If 1
When branching from the main improvement material supply pipe and discharging from multiple discharge vanes, uniform discharge is difficult; one discharge vane may discharge smoothly, but other discharge vanes may not be able to discharge due to clogging, lack of pressure, etc. It often becomes.

The purpose of the present invention is to provide a ground improvement material supplying device that can uniformly discharge the material without increasing the size or complexity of the device. Insert the same number of improvement material supply pipes as the number of improvement material discharge blades into the rotating shaft on which the improvement material discharge blades are protruded, and the base end of each improvement material supply pipe is installed in the machine for pumping the granular ground improvement material. It is located at a point connected to each of the plurality of powder and granular ground improvement material discharge parts.

Hereinafter, the present invention will be specifically explained based on one embodiment shown in the drawings.

In FIG. 1, 1 is a hollow rotating shaft,
Its upper end is connected to a rotary drive machine (not shown) suspended from the main body of the ground processing machine on the ground so as to be able to rise and fall freely.
Further, a plurality of improvement material discharging blades 2 are protruded radially from the lower end thereof, and the same number of improvement material supply pipes 3 as the improvement material discharging blades 2 are inserted inside.

Each improvement material discharging blade 2 is a hollow body with only the bottom open, and improvement material supply pipes 3 corresponding to the interior spaces thereof communicate through openings 4, respectively.

In the improved material pumping machine shown in Figs. 2 and 3,
Reference numeral 5 denotes a hopper containing a ground improvement material 6 in the form of powder and granules, a feed wheel 7 is rotatably installed at the bottom of the hopper, and a number of pockets 8 are bored around the feed wheel 7. has been done.

Reference numeral 9 denotes the same number of compressed air pipes as the improving material supply pipes 3, and each tip thereof faces the upper surface of the feed wheel 7 at a symmetrical position around the periphery thereof.

The base end 10 of each improvement material supply pipe 3 faces the lower surface of the periphery of the feed wheel 7 at the same position as the tip of the corresponding compressed air pipe 9, and the corresponding improvement material supply pipe 3 and compressed air pipe 9 It is designed to communicate via pocket 8.

In the figure, 11 is a head cover that covers the insertion portion of the compressed air pipe 9 into the hopper 5, and 12 is a rotating shaft of the feed wheel 7.

The soil improvement material 6 in the hopper 8 enters into the pocket 8, and this pocket 8 is moved by the rotation of the feed wheel 7 and is delivered to the granular soil improvement material discharging section 13.
(where the tip of the compressed air pipe 9 and the base end of the improvement material supply pipe 3 are located facing each other), the compressed air sent from the compressor to the compressed air pipe 9 causes the inside of the improvement material supply pipe 3 to For example, when the rotary shaft 1 that has penetrated into the ground to a predetermined depth rises, if the improved material pumping machine is operated while rotating the rotary shaft 1, the improved material is discharged simultaneously and evenly from each improved material discharge blade 2. The ground improvement material 6 can be discharged.

At this time, the soil improvement material 6 is sent together with air, but it is preferable to recover the air by appropriate means and supply only the soil improvement material 6 into the ground. Mixing is performed by the improving material discharge blade 2, but a blade exclusively for stirring may also be provided.

As is clear from the above explanation, since the device of the present invention can discharge the improvement material simultaneously and in the same condition from multiple improvement material discharging blades, good stirring and mixing of soil and improvement material can be expected. First, since there is only one improved material pressure feeder, the equipment does not become large.
It is also advantageous in terms of cost.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view of the lower end of the rotating shaft, FIG. 2 is a sectional view of the main part of the improved material pumping machine, and FIG. 3 is a plan view of the feed wheel. In the figure, 1...rotating shaft, 2...improvement material discharging blade, 3
...Improvement material supply pipe, 5...Hotsupa, ....

Claims (1)

[Scope of utility model registration request] The same number of improving material supply pipes as the improving material discharging blades were inserted into a rotating shaft with multiple improving material discharging blades protruding from the lower end, and the base end of each improving material supply pipe was installed in the improved material pumping machine. A ground improvement material supply device, characterized in that it is connected to each of a plurality of granular ground improvement material discharge units.